(December 17, 1797 - May 13, 1878)
Joseph Henry was an American scientist who served as the first Secretary of the Smithsonian Institution, as well as a founding member of the National Institute for the Promotion of Science, a precursor of the Smithsonian Institution.
(November 8, 1923 - June 20, 2005)
Jack St. Clair Kilby was an American physicist who took part (along with Robert Noyce) in the realization of the first integrated circuit while working at Texas Instruments (TI) in 1958. He was awarded the Nobel Prize in physics in 2000. He is also the inventor of the handheld calculator and the thermal printer.